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Solve Puzzle 1 to unlock this puzzle.
Estimated difficulty: Hard
D, E and F lie on BC, CA and AB of triangle ABC, respectively. BD:DC = 2:1, CE:EA = 4:1 and AF:FB = 7:1. P is the intersection of AD and BE, Q of BE and CF, and R of CF and AD. Inside PQR, U lies on QR, V on RP and W on PQ, with QU:UR = 2:1, RV:VP = 1:1 and PW:WQ = 3:1. X is the intersection of PU and QV, Y of QV and RW, and Z of RW and PU. XYZ has area 10 cm². Find the total shaded area inside ABC but outside PQR.
Solve this puzzle to complete the set.
All puzzles
- Puzzle 1 · Medium (estimated)
- Puzzle 2 · Medium (estimated) · Locked
- Puzzle 3 · Hard (estimated) · Locked
- Puzzle 4 · Medium (estimated) · Locked
- Puzzle 5 · Hard (estimated) · Locked
- Puzzle 6 · Hard (estimated) · Locked
- Puzzle 7 · Hard (estimated) · Locked
- Puzzle 8 · Hard (estimated) · Locked
- Puzzle 9 · Hard (estimated) · Locked
- Puzzle 10 · Hard (estimated) · Locked
- Puzzle 11 · Hard (estimated) · Locked
- Puzzle 12 · Hard (estimated) · Locked
- Puzzle 13 · Hard (estimated) · Locked
- Puzzle 14 · Hard (estimated) · Locked
- Puzzle 15 · Hard (estimated) · Locked
- Puzzle 16 · Hard (estimated) · Locked
- Puzzle 17 · Hard (estimated) · Locked
- Puzzle 18 · Hard (estimated) · Locked
- Puzzle 19 · Hard (estimated) · Locked
- Puzzle 20 · Hard (estimated) · Locked
- Puzzle 21 · Hard (estimated) · Locked
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